ACDelco GM Original Equipment 41-156 Iridium Spark Plug

The ACDelco Spark Plugs are designed for excellent engine idling stability and smooth performance, with a one-piece suppressor seal that blocks radio frequencies that can affect vehicle electronics.

The Iridium Spark Plugs offer superior engine idle stability and smooth performance, along with a one-piece suppressor seal that meters spark energy for long electrode life and seals against combustion leakage.

The Platinum Spark Plugs are designed to deliver long-lasting performance and maximize durability, with a one-piece, fired-in suppressor seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and seal against compression pressures for long life.

The RAPIDFIRE Spark Plugs are made with ribless insulators to help optimize plug-to-boot seal, and a solid-state suppressor with two-piece design that provides excellent performance and durability.

With these spark plugs, you can enjoy improved engine performance, better fuel efficiency, and longer lifespan for your vehicle.